| Article | |
| Report number | arXiv:2002.01978 ; UdeM-GPP-TH-20-276 |
| Title | $CP$ Violation in Same-sign Dilepton Production at the LHC |
| Related title | CP Violation in Same-sign Dilepton Production at the LHC |
| Author(s) | Najafi, Fatemeh (Montreal U.) ; Kumar, Jacky (Montreal U.) ; London, David (Montreal U.) ; MacKenzie, Richard (Montreal U.) |
| Publication | 2020-07-29 |
| Imprint | 2020-02-05 |
| Number of pages | 7 |
| Note | 8 pages, 1 figure. Important changes to the paper: we now focus on a single NP model, and include a detailed discussion about the prospects for the observation of TPs at the LHC |
| In: | Phys. Rev. D 102 (2020) 015025 |
| DOI | 10.1103/PhysRevD.102.015025 |
| Subject category | hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC |
| Abstract | If the neutrino is a Majorana particle, low-energy lepton-number-violating (LNV) processes, such as neutrinoless double-beta ($0\nu\beta\beta$) decay, are possible. It may also be possible to observe high-energy $0\nu\beta\beta$-like LNV processes at the LHC. These are distinguished by the presence of same-sign dileptons in the final state (e.g., ${\bar u} d \to t {\bar b} \, e^- \mu^-$). In this paper, we show that CP-violating triple products (TPs) may be present in the process, and may be measurable at the LHC. If a nonzero TP were observed, it would give us much information about the underlying new physics (NP). We would know that there are (at least) two interfering NP amplitudes, with different weak phases and different Lorentz structures. And if we had some knowledge of the NP, e.g., by direct production of NP particles, we could get information about the magnitudes and relative phases of its couplings. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2020-2025 authors (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Zapis kreiran 2020-03-03, zadnja izmjena 2021-04-07
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